<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    body{
      margin: 0;
      padding: 0;
    }
    ul{
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .menu {
      background: rgba(105,101,101,.6);
      width: 234px;
      /* background: rgba(105,101,101,.6); */
      padding: 20px 0;
    }
    a{
      text-decoration: none;
      /* color: #333; */
    }
    .item a{
      color: #fff;
      display: block;
      height: 42px;
      line-height: 42px;
      padding-left: 30px;
      background: url(./img/arrow.png) no-repeat;
      background-position: 198px center;

    }
    .item{
      font-size: 14px;
    }
    .item a:hover{
      background-color: #ff6700;
    }
  </style>
</head>
<body>
  <ul class="menu">
    <li class="item"><a href="#">菜单项1</a></li>
    <li class="item"><a href="#">菜单项2</a></li>
    <li class="item"><a href="#">菜单项3</a></li>
    <li class="item"><a href="#">菜单项4</a></li>
    <li class="item"><a href="#">菜单项5</a></li>
    <li class="item"><a href="#">菜单项6</a></li>
    <li class="item"><a href="#">菜单项7</a></li>
    <li class="item"><a href="#">菜单项8</a></li>
    <li class="item"><a href="#">菜单项9</a></li>
    <li class="item"><a href="#">菜单项10</a></li>
  </ul>
</body>
</html>